A Possible Mechanism of Solar Surges

It is synthesized that the principle observational features of solar surges, especially the magnetic features within the active region of surges. Using the plasma dynamical pinch theory and Petschek's mechanism, we present a possible mechanism of solar surges, namelya impulsive magnetic flux emergence in the active region--the periodical dynamical pinchof the plasma--the fast reconnection of the magnetic force lines--the ejection of surgeplasma. This mechanism successfully explains the periodicity of the surge ejection as well as the other main physical properties of solar surges.